SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function count (children 1)
     ExpressionList
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 3)
        Literal \'02892.orc\'
        Identifier ORC
        Literal \'number UInt64, negative_or_null Int64\'
   Function indexHint (children 1)
    ExpressionList (children 1)
     Function isNull (children 1)
      ExpressionList (children 1)
       Identifier negative_or_null
   Set
